This game is a rocket launching game, so physics simulation must be the top priority.
After more than an year of early access, it still doesn't give you the correct TWR when you're engines are misaligned(Giving that is as simple as just multiplying thrust by cos(theta)), no performance analysis based on the body you're gonna launch, no surface accelerations, no ascend/descend nodes and a tons more.
I've bought this game in a hope that someday this can replace or outperform KSP RO/RSS but it seems not. It does't feel like the matter of time, but the matter of philosophy of the development. Seems like it doesn't wanna be a physics sandbox but wanna be a craft building game.
Which is a good goal, but doesn't fit with my needs.